EurekAlert! News by Subject: Earth Science - News by Subject: Earth Science

Earth Science

Updates every hour. Last Updated: 11-Sep-2025 08:11 ET (11-Sep-2025 12:11 GMT/UTC)

How lakes connect to groundwater critical for resilience to climate change, research finds

European Association of Geochemistry
Reports and Proceedings

Understanding whether lakes are fed predominantly by groundwater or rainwater is critical to managing our water resources in the face of droughts and shortages, new research has found.

Meeting: Goldschmidt 2025

Youngest basaltic lunar meteorite fills nearly one billion-year gap in Moon’s volcanic history

European Association of Geochemistry
Reports and Proceedings

A 2.35-billion-year-old meteorite with a unique chemical signature, found in Africa in 2023, plugs a major gap in our understanding of the Moon’s volcanic history.

Funder: Royal Society
Meeting: Goldschmidt 2025

Tree pollen reveals 150,000 years of monsoon history—and a warning for Australia’s northern rainfall

Flinders University
Peer-Reviewed Publication

Northern Australia's annual monsoon season brings relief to drought-stricken lands and revitalises crops and livestock for farmers. But a study of 150,000 years of climate records shows that the monsoon is likely to intensify, triggering a higher risk of flooding while worsening the impact of droughts in East Asia.

Journal: Quaternary Science Reviews
Funder: Australian Research Council Centre of Excellence for Australian Biodiversity and Heritage, Australian Research Council Centre for Indigenous and Environmental Histories and Futures, Australian Research Council Laureate Fellowship

Elucidating the source process of the 2021 south sandwich islands tsunami earthquake

University of Tsukuba
Peer-Reviewed Publication

Researchers at University of Tsukuba analyzed seismic waveform data from the tsunami earthquake that occurred off the British South Sandwich Islands in the South Atlantic Ocean in August 2021. Researchers revealed a complex rupture process comprising four distinct episodes, each characterized by different dynamic behaviors. These findings advance the understanding of tsunami earthquake mechanisms and may inform future strategies for hazard assessment and mitigation.

Journal: Scientific Reports

Revealing Myanmar earthquake as a unique event comprising multiple sub-events, including boomerang-like reverse rupture propagation and supershear rupture

University of Tsukuba
Peer-Reviewed Publication

Researchers at University of Tsukuba analyzed the source process of a significant earthquake that occurred in Myanmar in March 2025 using a novel approach, the potency density tensor inversion method. Unlike conventional methods, this approach does not assume the rupture propagation direction or fault geometry, allowing for a more flexible and accurate analysis. The results revealed an exceptionally complex source process characterized by asymmetric and rapid rupture growth that repeatedly propagated along the fault in both the north and south directions.

Journal: Seismica

Uncovering the rock record of Earth’s earliest continental crust

Science China Press
Peer-Reviewed Publication

In a paper published in National Science Review, scientists used machine learning to reconstruct the geochemical composition of the Hadean continental crust. Based on Jack Hills zircons, the study reveals a felsic crust dominated by TTGs and potassic granites, formed through partial melting of mafic protocrust during crustal thickening. The results provide new constraints on early Earth’s tectonic evolution.

Journal: National Science Review
Funder: National Natural Science Foundation of China

PCB in the Seto inland sea: Spatial and seasonal variations, sources, and responses

Ehime University
Peer-Reviewed Publication

Osaka Bay had much higher CB-153 concentrations than other areas of the Seto Inland Sea. The atmosphere was the largest source, while river discharges served as a secondary source for the CB-153 in the Seto Inland Sea. With the decline of CB-153 input from the atmosphere, the concentration decreases significantly over the Seto Inland Sea except for Osaka Bay. On the other hand, Osaka Bay responds to the decline of CB-153 input from rivers.

Journal: Environmental Research
Funder: Moonshot Research and Development Program, New Energy and Industrial Technology Development Organization

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